Home / 87,191.90-130,601.91-42,145.19

Finding the Fourth Proportional to 87,191.90, 130,601.91 and 42,145.19

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Solution

The fourth proportional to 87,191.90, 130,601.91 and 42,145.19 is: 63,127.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,191.90 : 130,601.91 = 42,145.19 : x
  2. Step 2: Convert to fraction form
    87,191.90/130,601.91 = 42,145.19/x
  3. Step 3: Cross multiply
    87,191.90x = 130,601.91 × 42,145.19
  4. Step 4: Simplify right side
    87,191.90x = 5,504,242,311.31
  5. Step 5: Solve for x
    x = 5,504,242,311.31/87,191.90
  6. Step 6: Final answer
    x = 63,127.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.